scholarly journals Vegetative parameters of apple cultivars in integrated and organic production systems

2016 ◽  
Vol 22 (1-2) ◽  
Author(s):  
P. Dremák ◽  
Á. Csihon ◽  
I. Gonda
Keyword(s):  
Production System ◽  
Production Systems ◽  
Training System ◽  
Organic Production ◽  
Production Costs ◽  
Organic System ◽  
Lower Trunk ◽  
Organic Systems ◽  
Apple Cultivars ◽  
Apple Production

Success of apple production is highly influenced by the applied production system and the planted cultivar. In this paper growing characteristics of 39 apple cultivars were studied in integrated and organic production systems. These kind of parameters are less studied in the cultivar and training system examinations, although they have huge effect on the training and maintaining of canopy, on the pruning necessity, ultimately on the production costs. According to our results the thickness of the central axis of apple trees showed significant differences between the integrated and the organic systems. Axis of the trees with lower trunk thickness tapers more slightly in the integrated production system, than in the case of the trees with thicker trunk in the organic system. Thicker axis is not accompanied by thicker trunk, namely the thickness of the central leader starts to decrease stronger in the organic production system, compared to the integrated one.

scholarly journals Effect of pruning on disease incidence of apple scab and powdery mildew in integrated and organic apple production

2005 ◽  
Vol 11 (1) ◽  
Author(s):  
I. J. Holb
Keyword(s):  
Powdery Mildew ◽  
Production System ◽  
Production Systems ◽  
Venturia Inaequalis ◽  
Disease Incidence ◽  
Apple Scab ◽  
Organic Production ◽  
Environmentally Benign ◽  
Apple Cultivars ◽  
Apple Production

In a three-year study, the effect of two winter pruning treatments (strong and weak) on apple scab (Venturia inaequalis) and powdery mildew (Podosphaera leucotricha) was evaluated on six apple cultivars (`Rewena', `Elstar', 'Liberty', 'Gala', 'Pilot' and `Jonica') in two environmentally-benign apple production systems (integrated and organic). Results on apple scab showed that compared to the integrated production system, the pathogen caused significantly more infection on the leaves of cvs. `Elstar', 'Gala' and `Jonica' in the organic production system. The effect of pruning treatments on apple scab was mainly detectable on the cultivars susceptible to the disease such as cvs. 'Gala' and `Jonica'. The weak pruning correlated with a higher level of apple scab infection than the strong pruning, especially in the organic production system. Primary mildew infection was very low in both protection systems (below 2 %), therefore, effect of pruning on primary mildew infection could not be analysed. Low secondary mildew incidence was detected in the organically treated orchard part; however, incidence of powdery mildew was significantly higher (P> 0.05) on cvs. 'Elstar', 'Pilot' and `Jonica' in the integrated orchard part compared to cvs. 'Gala', 'Rewena' and 'Liberty'. The highest incidence of mildew was on cv. 'Elstar'. Pruning had very low effect on incidence of secondary mildew infection on leaves.

scholarly journals Branching features of apple cultivars in integrated and organic production technology

2018 ◽  
Vol 24 (3-4) ◽  
Author(s):  
P. Dremák ◽  
Á. Csihon ◽  
I. Gonda
Keyword(s):  
Organic Farming ◽  
Production Technology ◽  
Production System ◽  
Production Systems ◽  
Environmentally Friendly ◽  
Organic Production ◽  
Integrated System ◽  
Integrated Production ◽  
Apple Cultivars ◽  
Environmentally Friendly Production

In our study, vegetative characteristics of 39 apple cultivars were evaluated in environmentally friendly production systems. Numbers of the branches of the central leader in different high zones were shown. According to our results, number of the branches of the axis was probably larger in the integrated production system, compared to the organic one, which is related to the conditional status of the trees. Based on our experiences training and maintaining canopies in integrated system was easier, as relative more extensive canopies were needed in organic farming.

Comparison of conventional and organic apple production systems during three years of conversion to organic management in coastal California

1998 ◽  
Vol 13 (4) ◽  
pp. 162-180 ◽  
Author(s):  
Sean L. Swezey ◽  
Matthew R. Werner ◽  
Marc Buchanan ◽  
Jan Allison
Keyword(s):  
Production System ◽  
Production Systems ◽  
Codling Moth ◽  
Organic Production ◽  
Leaf Damage ◽  
Organic Management ◽  
Organic C ◽  
Apple Production ◽  
Wood Bark ◽  
Certified Organic

AbstractConventional and organic semidwarf Granny Smith apple production systems were compared during three years of conversion to certified organic management. Because of differences in fruit load with hand thinning compared with chemical thinning, apple tonnage was higher in the organic production system (OPS) in 1989 and 1991. The organic system was higher than the conventional system in number and weight of fruit per tree, but smaller in average fruit size. Using grower-receivedfarmgate premiums of 38% (1990) and 33% (1991) for unsorted, certified organic apples, comparative cost accounting showed greater net return per hectare for the OPS. The OPS required higher material and labor inputs in all years.Greater terminal growth in the conventional production system (CPS) in 1991 was the only significant difference in growth indicators between systems. N was generally higher in leaf and new wood bark tissues in the CPS. P was generally higher in the leaf and new wood bark tissues in the OPS. No decline in yield was associated with increased weed biomass in the OPS. There was no difference in fruit damage caused by codling moth between production system treatments (codling moth granulosis virus and pheromone-based mating disruption vs. synthetic insecticide). In 1991, secondary lepidopterous pests (apple leafroller and orange tortrix) caused greater fruit scarring in the CPS. In all years, tentiform leafminers caused greater leaf damage in the CPS. Apple leafhopper density and leaf damage were greater in the OPS in 1990 and 1991.Soil nutrient levels showed few significant changes during conversion to organic management. Soil bulk density and water holding capacity were useful indicators of changes in soil physical characteristics. Potentially mineralizable nitrogen andmicrobial biomass-C were more sensitive indicators of system change than total N or organic C. Two soil biological ratios, the respiratory ratio and biomass-C/total organic-C, were similar in the two production systems. Earthworm biomass and abundance increased in the OPS in the third year. The introduction ofLumbricus terrestrisinto the OPS greatly increased litter incorporation rates.

scholarly journals An Examination of the Economics of Sustainable and Conventional Horticulture

2000 ◽  
Vol 10 (4) ◽  
pp. 687-691
Author(s):  
Robin G. Brumfield
Keyword(s):  
Crop Production ◽  
Production Systems ◽  
Economic Benefits ◽  
Production Costs ◽  
Organic System ◽  
Price Premiums ◽  
Organic Systems ◽  
Long Term Study ◽  
Adverse Impacts ◽  
The Cost

Since World War II, U.S. agriculture has reduced production costs by substituting petrochemicals for labor. Adverse impacts from chemical intensive agriculture include increased pest levels, groundwater and surface water contamination, soil erosion, and concerns about harmful levels of pesticide residues. Sustainable farming programs such as integrated crop management (ICM) and organic farming encourage farmers to use systems that reduce the adverse impacts of chemical agriculture. However, before farmers adopt an alternative system, they must determine that economic benefits from the alternative farming activities exceed the costs incurred. Unfortunately, relatively few studies have compared the cost of organic crop production with conventional production systems. Results of these studies are mixed. In some studies, organic systems are more profitable than conventional systems with organic price premiums, but are not economically viable without price premiums. In one long-term study, the organic system was more profitable than a conventional one if the cost of family labor was ignored, but less profitable if it was included. In some studies, net returns were higher for ICM than for conventional or organic systems, but in others, they were higher. Results also vary on a crop by crop basis.

scholarly journals Production components and yield of bushing snap bean in conventional and organic production systems

2017 ◽  
Vol 38 (5) ◽  
pp. 3353
Author(s):  
Guilherme Renato Gomes ◽  
Felipe Favoretto Furlan ◽  
Gustavo Henrique Freiria ◽  
Leandro Simões Azeredo Gonçalves ◽  
Lúcia Sadayo Assari Takahashi
Keyword(s):  
Plant Height ◽  
Production System ◽  
Production Systems ◽  
Organic Production ◽  
Flowering Plant ◽  
Joint Analysis ◽  
Conventional System ◽  
Organic System ◽  
Snap Bean ◽  
Average Mass

Production systems influence crops differently, mainly in terms of yield. However, there are few studies that have evaluated different bushing snap bean genotypes in different systems. Thus, this study aimed to evaluate the production components and yield of bushing snap beans in conventional and organic production systems. The experimental design was a randomized complete block, in a factorial 6 × 2 arrangement, corresponding to six genotypes and two production systems, with three replications. The genotypes Isla Manteiga Baixo®, Isla Macarrão Baixo®, Feltrin Vicenza Amarelo Baixo®, and Feltrin Macarrão Napoli®, UEL 1, and UEL 2 were submitted to the following determinations: days to flowering; plant height; medium number of pods per plant; average pod mass, length, and diameter; and yield of commercial pods. A joint analysis of variance was conducted by applying the F test, with mean comparison performed using the Tukey’s test (p < 0.05). Anthesis of the genotypes Feltrin Vicenza Amarelo Baixo, UEL 2, Isla Macarrão Baixo, and Feltrin Macarrão Napoli is anticipated in the conventional production system. The genotype UEL 2 shows higher precocity in anthesis within the conventional system. The genotypes Isla Manteiga Baixo and UEL 1 produce more pods per plant in the conventional system. In the organic system, the genotype Feltrin Macarrão Napoli produces double the number of pods per plant compared with Isla Manteiga Baixo. The organic system leads to greater plant height and average mass, length, and diameter of pods in relation to the conventional system. The commercial pod yield of bushing snap bean is not altered by differences in the production system or genotype.

scholarly journals Alternative products on the control of asian rust soybean

2021 ◽  
Vol 10 (1) ◽  
pp. e1110110667
Author(s):  
Ivan Carlos Zorzzi ◽  
Mycheli Preuss da Cruz ◽  
Nean Locatelli Dalacosta ◽  
Janaína Bruzamarello ◽  
Álvaro Luiz Ghedin ◽  
...  
Keyword(s):  
Production Systems ◽  
Bordeaux Mixture ◽  
Organic Production ◽  
Field Conditions ◽  
Soybean Rust ◽  
Copper Oxychloride ◽  
Organic System ◽  
Organic Systems ◽  
Progress Curve ◽  
Detached Leaves

In recent years, it has been observed a significant expansion of the organic market. In this context, the main phytosanitary problem of soybean in the organic system is Asian rust (Phakopsora pachyrhizi), for which it is difficult to control, considering the restriction of products authorized for use in the organic system and the limitation of research related to this management system. The objective of this study was to evaluate the effect of alternative products on the germination of uredospores, on the severity of soybean rust on detached leaves and the control of the disease under greenhouse and field conditions. The alternative treatments were calcium silicate, lime sulphur, bordeaux mixture, and copper oxychloride. The variables analyzed were uredospores germination, disease severity, defoliation level, area under the disease progress curve (AUDPC), a thousand grain mass and productivity. The results obtained indicate that there is a possibility of using copper oxychloride to manage the Asian rust in organic production systems. Copper oxychloride had reduced the germination of uredospores and when evaluated under controlled conditions using detached leaves and greenhouse, it had reduced the severity of the disease. In field conditions, copper oxychloride at the doses of 588 and 882 g ha-1 reduced severity and AUDPC, in addition to increasing productivity at 1434 kg ha-1 in relation to the control. It is concluded that copper oxychloride can be used as a tool in the management of Asian rust in organic systems of soy production. 

scholarly journals Performance of advanced potato genotypes in organic and conventional production systems

2020 ◽  
Vol 38 (1) ◽  
pp. 53-57
Author(s):  
Carlos Francisco Ragassi ◽  
Agnaldo DF de Carvalho ◽  
Giovani Olegário da Silva ◽  
Gabriel Emiliano Pereira ◽  
Arione da S Pereira
Keyword(s):  
Tuber Yield ◽  
Production Systems ◽  
Organic Production ◽  
Conventional System ◽  
Potential Productivity ◽  
Organic System ◽  
Organic Systems ◽  
Input Use ◽  
Conventional Production ◽  
New Cultivars

ABSTRACT Potato is responsive to intensive agricultural input use; however, it can be produced in less intensive production systems (such as the organic system) by using appropriate production techniques and genotypes adapted to this system. This study aimed to evaluate the performance of advanced potato genotypes for tuber yield under conventional and organic production systems, in order to select potential genotypes to become new cultivars adapted to these systems. Fifteen advanced potato clones and two controls were evaluated under organic and conventional production systems, in 2016 and 2017, in Brasília-DF, Brazil. The experimental design was randomized blocks with three replicates and plots composed of two rows with 10 plants each, spaced 0.35 m between plants and 0.80 m between rows. Total (mass) and marketable (mass and number of tubers) productivities were evaluated. Variance analysis showed significant differences among genotypes for all traits. Despite the lower average tuber yield in the organic system, selecting genotypes with high potential productivity was possible in this system, such as F158-08-01 and F158-08-02, showing high marketable tuber yield, with values equivalent to the conventional system. Clones F102-08-04, F13-09-07, F-18-09-03, F-183-08-01, F-21-09-07, F31-08-05, F63-10-07 and F97-07-03 also outperformed the control cultivars in organic system. For conventional system, F158-08-01, F158-08-02 and F183-08-01 were superior, and F18-09-03, F21-09-07, F63-10-07, F97-07-03, PCDINV10 and PCDSE090 showed performance similar or superior to the most productive control (cultivar Asterix). Genotypes F158-08-01 and F158-08-02 were superior in both conventional and organic systems, with potential to become new cultivars recommended for both production systems.

scholarly journals Effect of pruning intensity on performance of apple cultivars in environmentally friendly production systems

2009 ◽  
Vol 15 (4) ◽  
Author(s):  
P. Dremák ◽  
I. Gonda ◽  
I. J. Holb
Keyword(s):  
Production Systems ◽  
Early Spring ◽  
Organic Production ◽  
Fruit Setting ◽  
Apple Cultivars ◽  
Apple Production ◽  
Generative Processes ◽  
Growth Features ◽  
Environmentally Friendly Production ◽  
Pruning Intensity

The two worldwide accepted environmentally freindly production systems are integrated and organic. The two systems shows considerably differences in several practical production technology elements. These effects come forward in generative processes (e.g. flowering, fruit setting) and vegetative features (e.g. growth). The aim of our study was to study the effect of pruning intensity on growth features of cultivars in integrated and organic apple production. In early spring of 2009, we determined two pruning intensities (strong and week) on six scab resistant and tolerant cultivars. Strong pruning resulted in stronger shoot growth for all cultivars compared to weak pruning. It is obvious that pruning intensity had more effect on vegetative performance than conditional differences originates from integrated and organic production.

scholarly journals Apple biological and physiological disorders in the orchard and in postharvest according to production system

2013 ◽  
Vol 35 (1) ◽  
pp. 1-8 ◽  
Author(s):  
Carlos Roberto Martins ◽  
Alexandre Hoffmann ◽  
Cesar Valmor Rombaldi ◽  
Roseli de Mello Farias ◽  
Adenir Vieira Teodoro
Keyword(s):  
Production System ◽  
Production Systems ◽  
Organic System ◽  
Physiological Disorders ◽  
Anastrepha Fraterculus ◽  
Bitter Pit ◽  
Apple Production ◽  
Postharvest Rot ◽  
Organic Transition ◽  
Organic Orchards

The study aimed to evaluate the incidence of biological and physiological disorders in the field and postharvested apples cvs. Gala, Fuji and Catarina grown in four production systems: conventional, organic transition, integrated and organic. Apples were evaluated for damages related to biological and physiological disorders in the orchard and after harvest. The greatest damages were attributed to pests, especially Anastrepha fraterculus in the organic system and Grapholita molesta in the organic transition. Apples produced in organic orchards had higher damage levels caused by postharvest physiological disorders than those grown in other production systems. For apples becoming from organic orchards most of the damage was due to lenticels breakdown and degeneration ('Gala'), and bitter pit ('Fuji' and 'Catarina'). The incidence of postharvest rot was not influenced by apple production system.

scholarly journals Effect of the environmentally friendly production systems on the vegetative characteristics of apple cultivars

2017 ◽  
Vol 23 (1-4) ◽  
Author(s):  
P. Dremák ◽  
Á Csihon ◽  
I. Gonda
Keyword(s):  
Production System ◽  
Production Systems ◽  
Environmentally Friendly ◽  
Organic Production ◽  
Sectional Area ◽  
Apple Trees ◽  
Cross Sectional ◽  
Integrated Production ◽  
Apple Cultivars ◽  
Environmentally Friendly Production

In this study effect of the environmentally friendly production systems on the brunch cross sectional area of apple trees trained to free spindle canopy are presented based on the data of 39 cultivars. According to our results branch thickness of the apple cultivars located in the lower, middle and upper region of the tree are more homogenous in the integrated production system compared to the organic one. Therefore the severity of the annual maintain pruning must be necessarily more moderate in the integrated growing system, than in the organic production system.

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